<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0">
  <title>Document</title>
  <style>
    body {
      margin: 0;
    }

    h1 {
      text-align: center;
      font-size: 6.4vw;
    }
  </style>
</head>

<body>
  <h1>这是一个新页面</h1>
</body>

</html>